| 年度 | 实际值 |
|---|---|
| 1978 | 2540 |
| 1979 | |
| 1980 | 2219 |
| 1981 | |
| 1982 | |
| 1983 | |
| 1984 | |
| 1985 | 3344 |
| 1986 | |
| 1987 | |
| 1988 | |
| 1989 | |
| 1990 | 6504 |
| 1991 | |
| 1992 | |
| 1993 | |
| 1994 | |
| 1995 | 33897 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 61178 |
| 2000 | 62508 |
| 2001 | 64381 |
| 2002 | 79824 |
| 2003 | 83428 |
| 2004 | 112641 |
| 2005 | 116142 |
| 2006 | 179607 |
| 2007 | 231748 |
| 2008 | 406333 |
| 2009 | 772951 |
| 2010 | 1011060 |